Which data type would a compliance function rely on to monitor risk exposure across assets?

• A. End of Day pricing files
• B. Corporate actions data
• C. Reference data (entity identifiers and attributes)
• D. Streaming real-time quotes

Answer: (C)

Consistent, standardized mapping of assets and related attributes is essential for monitoring risk exposure across portfolios. Reference data provides the identifiers (like ISINs and CUSIPs) and descriptive attributes (instrument type, currency, issuer, maturity, sector, counterparty information) that let different systems align on what each holding actually is. With reliable reference data, position data from trading records, valuation data from pricing feeds, and exposure calculations can be joined and aggregated correctly, enabling accurate cross-portfolio risk monitoring across assets. End-of-day pricing files deliver valuations but rely on the same identifiers to be meaningful; corporate actions data updates instrument characteristics but does not itself establish the master mapping; streaming real-time quotes give live prices but without stable reference identifiers and attributes, you can't consistently attribute those prices to the correct assets. Reference data is the foundation that makes risk exposure calculations reliable across assets.